Update ReadMe.

docs/sources/alerting/notifications.md

@@ -128,6 +128,10 @@ There are a couple of configuration options which need to be set up in Grafana U
 
 
 Once these two properties are set, you can send the alerts to Kafka for further processing or throttling.
 Once these two properties are set, you can send the alerts to Kafka for further processing or throttling.
 
 
+### Google Hangouts Chat
+
+Notifications can be sent by setting up an incoming webhook in Google Hangouts chat. Configuring such a webhook is described [here](https://developers.google.com/hangouts/chat/how-tos/webhooks).
+
 ### All supported notifier
 ### All supported notifier
 
 
 Name | Type |Support images
 Name | Type |Support images
@@ -137,6 +141,7 @@ Pagerduty | `pagerduty` | yes
 Email | `email` | yes
 Email | `email` | yes
 Webhook | `webhook` | link
 Webhook | `webhook` | link
 Kafka | `kafka` | no
 Kafka | `kafka` | no
+Google Hangouts Chat | `googlechat` | yes
 Hipchat | `hipchat` | yes
 Hipchat | `hipchat` | yes
 VictorOps | `victorops` | yes
 VictorOps | `victorops` | yes
 Sensu | `sensu` | yes
 Sensu | `sensu` | yes